Merge branch 'ch9-dev' into ch9

os/Cargo.toml

@@ -2,7 +2,7 @@
 name = "os"
 version = "0.1.0"
 authors = ["Yifan Wu <shinbokuow@163.com>"]
-edition = "2018"
+edition = "2021"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
@@ -18,6 +18,9 @@ k210-pac = { git = "https://github.com/wyfcyx/k210-pac" }
 k210-hal = { git = "https://github.com/wyfcyx/k210-hal" }
 k210-soc = { git = "https://github.com/wyfcyx/k210-soc" }
 easy-fs = { path = "../easy-fs" }
+virtio-input-decoder = "0.1.4"
+embedded-graphics = "0.7.1"
+tinybmp = "0.3.1"
 
 [features]
 board_qemu = []

os/Makefile

@@ -89,15 +89,35 @@ disasm-vim: kernel
 
 run: run-inner
 
-run-inner: build
+gui: build
 ifeq ($(BOARD),qemu)
 	@qemu-system-riscv64 \
+		-M 128m \
 		-machine virt \
-		-nographic \
 		-bios $(BOOTLOADER) \
 		-device loader,file=$(KERNEL_BIN),addr=$(KERNEL_ENTRY_PA) \
 		-drive file=$(FS_IMG),if=none,format=raw,id=x0 \
-        -device virtio-blk-device,drive=x0,bus=virtio-mmio-bus.0
+        -device virtio-blk-device,drive=x0 \
+		-device virtio-gpu-device  \
+		-device virtio-keyboard-device  \
+		-device virtio-mouse-device \
+		-serial stdio 
+endif
+
+run-inner: build
+ifeq ($(BOARD),qemu)
+	@qemu-system-riscv64 \
+		-M 128m \
+		-machine virt \
+		-bios $(BOOTLOADER) \
+		-display none \
+		-device loader,file=$(KERNEL_BIN),addr=$(KERNEL_ENTRY_PA) \
+		-drive file=$(FS_IMG),if=none,format=raw,id=x0 \
+        -device virtio-blk-device,drive=x0 \
+		-device virtio-gpu-device  \
+		-device virtio-keyboard-device  \
+		-device virtio-mouse-device \
+		-serial stdio
 else
 	(which $(K210-BURNER)) || (cd .. && git clone https://github.com/sipeed/kflash.py.git && mv kflash.py tools)
 	@cp $(BOOTLOADER) $(BOOTLOADER).copy

os/run-fdt.sh

@@ -0,0 +1,11 @@
+qemu-system-riscv64 -M 128m -machine virt,dumpdtb=virt.out  \
+-bios ../bootloader/rustsbi-qemu.bin  \
+-device loader,file=target/riscv64gc-unknown-none-elf/release/os.bin,addr=0x80200000  \
+-drive file=../user/target/riscv64gc-unknown-none-elf/release/fs.img,if=none,format=raw,id=x0  \
+-device virtio-blk-device,drive=x0  \
+-device virtio-gpu-device  \
+-device virtio-keyboard-device  \
+-device virtio-mouse-device \
+-serial stdio
+
+fdtdump virt.out    

os/run-nodisp.sh

@@ -0,0 +1,10 @@
+qemu-system-riscv64 -M 128m -machine virt  \
+-bios ../bootloader/rustsbi-qemu.bin  \
+-display none \
+-device loader,file=target/riscv64gc-unknown-none-elf/release/os.bin,addr=0x80200000  \
+-drive file=../user/target/riscv64gc-unknown-none-elf/release/fs.img,if=none,format=raw,id=x0  \
+-device virtio-blk-device,drive=x0  \
+-device virtio-gpu-device  \
+-device virtio-keyboard-device  \
+-device virtio-mouse-device \
+-serial stdio  

os/run.sh

@@ -0,0 +1,9 @@
+qemu-system-riscv64 -M 128m -machine virt  \
+-bios ../bootloader/rustsbi-qemu.bin  \
+-device loader,file=target/riscv64gc-unknown-none-elf/release/os.bin,addr=0x80200000  \
+-drive file=../user/target/riscv64gc-unknown-none-elf/release/fs.img,if=none,format=raw,id=x0  \
+-device virtio-blk-device,drive=x0  \
+-device virtio-gpu-device  \
+-device virtio-keyboard-device  \
+-device virtio-mouse-device \
+-serial stdio  

os/src/boards/qemu.rs

@@ -1,10 +1,10 @@
 pub const CLOCK_FREQ: usize = 12500000;
 
 pub const MMIO: &[(usize, usize)] = &[
-    (0x1000_0000, 0x1000),    // VIRT_UART0 in virt machine
-    (0x1000_1000, 0x1000),    // VIRT_VIRTIO in virt machine
-    (0x0C00_0000, 0x40_0000), // VIRT_PLIC in virt machine
     (0x0010_0000, 0x00_2000), // VIRT_TEST/RTC  in virt machine
+    (0x2000000, 0x10000),
+    (0xc000000, 0x210000), // VIRT_PLIC in virt machine
+    (0x10000000, 0x9000),  // VIRT_UART0 with GPU  in virt machine
 ];
 
 pub type BlockDeviceImpl = crate::drivers::block::VirtIOBlock;
@@ -13,9 +13,13 @@ pub type CharDeviceImpl = crate::drivers::chardev::NS16550a<VIRT_UART>;
 pub const VIRT_PLIC: usize = 0xC00_0000;
 pub const VIRT_UART: usize = 0x1000_0000;
 
+pub const VIRTGPU_XRES: u32 = 1280;
+pub const VIRTGPU_YRES: u32 = 800;
+
 use crate::drivers::block::BLOCK_DEVICE;
 use crate::drivers::chardev::{CharDevice, UART};
 use crate::drivers::plic::{IntrTargetPriority, PLIC};
+use crate::drivers::{KEYBOARD_DEVICE, MOUSE_DEVICE};
 
 pub fn device_init() {
     use riscv::register::sie;
@@ -25,7 +29,8 @@ pub fn device_init() {
     let machine = IntrTargetPriority::Machine;
     plic.set_threshold(hart_id, supervisor, 0);
     plic.set_threshold(hart_id, machine, 1);
-    for intr_src_id in [1usize, 10] {
+    //irq nums: 5 keyboard, 6 mouse, 8 block, 10 uart
+    for intr_src_id in [5usize, 6, 8 , 10] {
         plic.enable(hart_id, supervisor, intr_src_id);
         plic.set_priority(intr_src_id, 1);
     }
@@ -38,7 +43,9 @@ pub fn irq_handler() {
     let mut plic = unsafe { PLIC::new(VIRT_PLIC) };
     let intr_src_id = plic.claim(0, IntrTargetPriority::Supervisor);
     match intr_src_id {
-        1 => BLOCK_DEVICE.handle_irq(),
+        5 => KEYBOARD_DEVICE.handle_irq(),
+        6 => MOUSE_DEVICE.handle_irq(),
+        8 => BLOCK_DEVICE.handle_irq(),
         10 => UART.handle_irq(),
         _ => panic!("unsupported IRQ {}", intr_src_id),
     }

os/src/config.rs

@@ -2,8 +2,8 @@
 
 pub const USER_STACK_SIZE: usize = 4096 * 2;
 pub const KERNEL_STACK_SIZE: usize = 4096 * 2;
-pub const KERNEL_HEAP_SIZE: usize = 0x20_0000;
-pub const MEMORY_END: usize = 0x80800000;
+pub const KERNEL_HEAP_SIZE: usize = 0x100_0000;
+pub const MEMORY_END: usize = 0x88000000;
 pub const PAGE_SIZE: usize = 0x1000;
 pub const PAGE_SIZE_BITS: usize = 0xc;
 

os/src/drivers/block/virtio_blk.rs

@@ -12,7 +12,7 @@ use lazy_static::*;
 use virtio_drivers::{BlkResp, RespStatus, VirtIOBlk, VirtIOHeader};
 
 #[allow(unused)]
-const VIRTIO0: usize = 0x10001000;
+const VIRTIO0: usize = 0x10008000;
 
 pub struct VirtIOBlock {
     virtio_blk: UPIntrFreeCell<VirtIOBlk<'static>>,

os/src/drivers/gpu/mod.rs

@@ -0,0 +1,66 @@
+use crate::sync::UPIntrFreeCell;
+use alloc::{sync::Arc, vec::Vec};
+use core::any::Any;
+use embedded_graphics::pixelcolor::Rgb888;
+use tinybmp::Bmp;
+use virtio_drivers::{VirtIOGpu, VirtIOHeader};
+const VIRTIO7: usize = 0x10007000;
+pub trait GPUDevice: Send + Sync + Any {
+    fn update_cursor(&self);
+    fn getfreambuffer(&self) -> &mut [u8];
+    fn flush(&self);
+}
+
+lazy_static::lazy_static!(
+    pub static ref GPU_DEVICE: Arc<dyn GPUDevice> = Arc::new(VirtIOGPU::new());
+);
+
+pub struct VirtIOGPU {
+    gpu: UPIntrFreeCell<VirtIOGpu<'static>>,
+    fb: &'static [u8],
+}
+static BMP_DATA: &[u8] = include_bytes!("../../assert/mouse.bmp");
+impl VirtIOGPU {
+    pub fn new() -> Self {
+        unsafe {
+            let mut virtio = VirtIOGpu::new(&mut *(VIRTIO7 as *mut VirtIOHeader)).unwrap();
+
+            let fbuffer = virtio.setup_framebuffer().unwrap();
+            let len = fbuffer.len();
+            let ptr = fbuffer.as_mut_ptr();
+            let fb = core::slice::from_raw_parts_mut(ptr, len);
+
+            let bmp = Bmp::<Rgb888>::from_slice(BMP_DATA).unwrap();
+            let raw = bmp.as_raw();
+            let mut b = Vec::new();
+            for i in raw.image_data().chunks(3) {
+                let mut v = i.to_vec();
+                b.append(&mut v);
+                if i == [255, 255, 255] {
+                    b.push(0x0)
+                } else {
+                    b.push(0xff)
+                }
+            }
+            virtio.setup_cursor(b.as_slice(), 50, 50, 50, 50).unwrap();
+
+            Self {
+                gpu: UPIntrFreeCell::new(virtio),
+                fb,
+            }
+        }
+    }
+}
+
+impl GPUDevice for VirtIOGPU {
+    fn flush(&self) {
+        self.gpu.exclusive_access().flush().unwrap();
+    }
+    fn getfreambuffer(&self) -> &mut [u8] {
+        unsafe {
+            let ptr = self.fb.as_ptr() as *const _ as *mut u8;
+            core::slice::from_raw_parts_mut(ptr, self.fb.len())
+        }
+    }
+    fn update_cursor(&self) {}
+}

os/src/drivers/input/mod.rs

@@ -0,0 +1,74 @@
+use crate::{
+    gui::{Button, Component},
+    sync::UPIntrFreeCell,
+    syscall::PAD,
+};
+use alloc::{string::ToString, sync::Arc};
+use core::any::Any;
+use embedded_graphics::{
+    prelude::{Point, Size},
+    text::Text,
+};
+use k210_hal::cache::Uncache;
+use virtio_drivers::{VirtIOHeader, VirtIOInput};
+use virtio_input_decoder::{Decoder, Key, KeyType};
+
+use super::GPU_DEVICE;
+
+const VIRTIO5: usize = 0x10005000;
+const VIRTIO6: usize = 0x10006000;
+
+struct VirtIOINPUT(UPIntrFreeCell<VirtIOInput<'static>>);
+
+pub trait INPUTDevice: Send + Sync + Any {
+    fn handle_irq(&self);
+}
+
+lazy_static::lazy_static!(
+    pub static ref KEYBOARD_DEVICE: Arc<dyn INPUTDevice> = Arc::new(VirtIOINPUT::new(VIRTIO5));
+    pub static ref MOUSE_DEVICE: Arc<dyn INPUTDevice> = Arc::new(VirtIOINPUT::new(VIRTIO6));
+);
+
+impl VirtIOINPUT {
+    pub fn new(addr: usize) -> Self {
+        Self(unsafe {
+            UPIntrFreeCell::new(VirtIOInput::new(&mut *(addr as *mut VirtIOHeader)).unwrap())
+        })
+    }
+}
+
+impl INPUTDevice for VirtIOINPUT {
+    fn handle_irq(&self) {
+        let mut input = self.0.exclusive_access();
+        input.ack_interrupt();
+        let event = input.pop_pending_event().unwrap();
+        let dtype = match Decoder::decode(
+            event.event_type as usize,
+            event.code as usize,
+            event.value as usize,
+        ) {
+            Ok(dtype) => dtype,
+            Err(_) => return,
+        };
+        match dtype {
+            virtio_input_decoder::DecodeType::Key(key, r#type) => {
+                println!("{:?} {:?}", key, r#type);
+                if r#type == KeyType::Press {
+                    let mut inner = PAD.exclusive_access();
+                    let a = inner.as_ref().unwrap();
+                    match key.to_char() {
+                        Ok(mut k) => {
+                            if k == '\r' {
+                                a.repaint(k.to_string() + "\n")
+                            } else {
+                                a.repaint(k.to_string())
+                            }
+                        }
+                        Err(_) => {}
+                    }
+                }
+            }
+            virtio_input_decoder::DecodeType::Mouse(mouse) => println!("{:?}", mouse),
+        }
+    }
+}

os/src/drivers/mod.rs

@@ -1,6 +1,9 @@
 pub mod block;
 pub mod chardev;
+pub mod gpu;
+pub mod input;
 pub mod plic;
-
 pub use block::BLOCK_DEVICE;
 pub use chardev::UART;
+pub use gpu::*;
+pub use input::*;

os/src/fs/mod.rs

@@ -11,6 +11,6 @@ pub trait File: Send + Sync {
     fn write(&self, buf: UserBuffer) -> usize;
 }
 
-pub use inode::{list_apps, open_file, OSInode, OpenFlags};
+pub use inode::{list_apps, open_file, OSInode, OpenFlags, ROOT_INODE};
 pub use pipe::{make_pipe, Pipe};
 pub use stdio::{Stdin, Stdout};

os/src/gui/button.rs

@@ -0,0 +1,79 @@
+use alloc::{string::String, sync::Arc};
+use embedded_graphics::{
+    mono_font::{
+        ascii::{FONT_10X20, FONT_6X10},
+        MonoTextStyle,
+    },
+    pixelcolor::Rgb888,
+    prelude::{Dimensions, Point, Primitive, RgbColor, Size},
+    primitives::{PrimitiveStyle, Rectangle},
+    text::{Alignment, Text},
+    Drawable,
+};
+
+use crate::{drivers::GPU_DEVICE, sync::UPIntrFreeCell};
+
+use super::{Component, Graphics};
+
+pub struct Button {
+    inner: UPIntrFreeCell<ButtonInner>,
+}
+
+pub struct ButtonInner {
+    graphic: Graphics,
+    text: String,
+    parent: Option<Arc<dyn Component>>,
+}
+
+impl Button {
+    pub fn new(size: Size, point: Point, parent: Option<Arc<dyn Component>>, text: String) -> Self {
+        let point = match &parent {
+            Some(p) => {
+                let (_, p) = p.bound();
+                Point::new(p.x + point.x, p.y + point.y)
+            }
+            None => point,
+        };
+        Self {
+            inner: unsafe {
+                UPIntrFreeCell::new(ButtonInner {
+                    graphic: Graphics {
+                        size,
+                        point,
+                        drv: GPU_DEVICE.clone(),
+                    },
+                    text,
+                    parent,
+                })
+            },
+        }
+    }
+}
+
+impl Component for Button {
+    fn paint(&self) {
+        let mut inner = self.inner.exclusive_access();
+        let text = inner.text.clone();
+        Text::with_alignment(
+            text.as_str(),
+            inner.graphic.bounding_box().center(),
+            MonoTextStyle::new(&FONT_10X20, Rgb888::BLACK),
+            Alignment::Center,
+        )
+        .draw(&mut inner.graphic);
+    }
+
+    fn add(&self, comp: alloc::sync::Arc<dyn Component>) {
+        unreachable!()
+    }
+
+    fn bound(
+        &self,
+    ) -> (
+        embedded_graphics::prelude::Size,
+        embedded_graphics::prelude::Point,
+    ) {
+        let inner = self.inner.exclusive_access();
+        (inner.graphic.size, inner.graphic.point)
+    }
+}

os/src/gui/graphic.rs

@@ -0,0 +1,57 @@
+use alloc::sync::Arc;
+use embedded_graphics::{
+    draw_target::DrawTarget,
+    pixelcolor::Rgb888,
+    prelude::{OriginDimensions, Point, RgbColor, Size},
+};
+
+use crate::drivers::{GPUDevice, GPU_DEVICE,};
+use crate::board::{VIRTGPU_XRES, VIRTGPU_YRES};
+
+#[derive(Clone)]
+pub struct Graphics {
+    pub size: Size,
+    pub point: Point,
+    pub drv: Arc<dyn GPUDevice>,
+}
+
+impl Graphics {
+    pub fn new(size: Size, point: Point) -> Self {
+        Self {
+            size,
+            point,
+            drv: GPU_DEVICE.clone(),
+        }
+    }
+}
+
+impl OriginDimensions for Graphics {
+    fn size(&self) -> Size {
+        self.size
+    }
+}
+
+impl DrawTarget for Graphics {
+    type Color = Rgb888;
+
+    type Error = core::convert::Infallible;
+
+    fn draw_iter<I>(&mut self, pixels: I) -> Result<(), Self::Error>
+    where
+        I: IntoIterator<Item = embedded_graphics::Pixel<Self::Color>>,
+    {
+        let fb = self.drv.getfreambuffer();
+
+        pixels.into_iter().for_each(|px| {
+            let idx = ((self.point.y + px.0.y) * VIRTGPU_XRES as i32 + self.point.x + px.0.x) as usize * 4;
+            if idx + 2 >= fb.len() {
+                return;
+            }
+            fb[idx] = px.1.b();
+            fb[idx + 1] = px.1.g();
+            fb[idx + 2] = px.1.r();
+        });
+        self.drv.flush();
+        Ok(())
+    }
+}

os/src/gui/icon.rs

@@ -0,0 +1,79 @@
+use alloc::{string::String, sync::Arc, vec::Vec};
+use embedded_graphics::{
+    image::Image,
+    mono_font::{ascii::FONT_10X20, iso_8859_13::FONT_6X12, MonoTextStyle},
+    pixelcolor::Rgb888,
+    prelude::{Point, RgbColor, Size},
+    text::Text,
+    Drawable,
+};
+use tinybmp::Bmp;
+
+use crate::{drivers::GPU_DEVICE, sync::UPIntrFreeCell};
+use crate::board::{VIRTGPU_XRES, VIRTGPU_YRES};
+use super::{Component, Graphics, ImageComp};
+
+static FILEICON: &[u8] = include_bytes!("../assert/file.bmp");
+
+pub struct IconController {
+    inner: UPIntrFreeCell<IconControllerInner>,
+}
+
+pub struct IconControllerInner {
+    files: Vec<String>,
+    graphic: Graphics,
+    parent: Option<Arc<dyn Component>>,
+}
+
+impl IconController {
+    pub fn new(files: Vec<String>, parent: Option<Arc<dyn Component>>) -> Self {
+        IconController {
+            inner: unsafe {
+                UPIntrFreeCell::new(IconControllerInner {
+                    files,
+                    graphic: Graphics {
+                        size: Size::new(VIRTGPU_XRES, VIRTGPU_YRES),
+                        point: Point::new(0, 0),
+                        drv: GPU_DEVICE.clone(),
+                    },
+                    parent,
+                })
+            },
+        }
+    }
+}
+
+impl Component for IconController {
+    fn paint(&self) {
+        println!("demo");
+        let mut inner = self.inner.exclusive_access();
+        let mut x = 10;
+        let mut y = 10;
+        let v = inner.files.clone();
+        for file in v {
+            println!("file");
+            let bmp = Bmp::<Rgb888>::from_slice(FILEICON).unwrap();
+            Image::new(&bmp, Point::new(x, y)).draw(&mut inner.graphic);
+            let text = Text::new(
+                file.as_str(),
+                Point::new(x + 20, y + 80),
+                MonoTextStyle::new(&FONT_10X20, Rgb888::BLACK),
+            );
+            text.draw(&mut inner.graphic);
+            if y >= 600 {
+                x = x + 70;
+                y = 10;
+            } else {
+                y = y + 90;
+            }
+        }
+    }
+
+    fn add(&self, comp: Arc<dyn Component>) {
+        todo!()
+    }
+
+    fn bound(&self) -> (Size, Point) {
+        todo!()
+    }
+}

os/src/gui/image.rs

@@ -0,0 +1,80 @@
+use alloc::{sync::Arc, vec::Vec};
+use embedded_graphics::{
+    image::Image,
+    pixelcolor::Rgb888,
+    prelude::{Point, Size},
+    Drawable,
+};
+use tinybmp::Bmp;
+
+use crate::{
+    drivers::{BLOCK_DEVICE, GPU_DEVICE},
+    sync::UPIntrFreeCell,
+};
+
+use super::{Component, Graphics};
+
+pub struct ImageComp {
+    inner: UPIntrFreeCell<ImageInner>,
+}
+
+pub struct ImageInner {
+    image: &'static [u8],
+    graphic: Graphics,
+    parent: Option<Arc<dyn Component>>,
+}
+
+impl ImageComp {
+    pub fn new(
+        size: Size,
+        point: Point,
+        v: &'static [u8],
+        parent: Option<Arc<dyn Component>>,
+    ) -> Self {
+        unsafe {
+            ImageComp {
+                inner: UPIntrFreeCell::new(ImageInner {
+                    parent,
+                    image: v,
+                    graphic: Graphics {
+                        size,
+                        point,
+                        drv: GPU_DEVICE.clone(),
+                    },
+                }),
+            }
+        }
+    }
+}
+
+impl Component for ImageComp {
+    fn paint(&self) {
+        let mut inner = self.inner.exclusive_access();
+        let b = unsafe {
+            let len = inner.image.len();
+            let ptr = inner.image.as_ptr() as *const u8;
+            core::slice::from_raw_parts(ptr, len)
+        };
+        let bmp = Bmp::<Rgb888>::from_slice(b).unwrap();
+        let point = match &inner.parent {
+            Some(parent) => {
+                let (_, point) = parent.bound();
+                Point::new(
+                    point.x + inner.graphic.point.x,
+                    point.y + inner.graphic.point.y,
+                )
+            }
+            None => inner.graphic.point,
+        };
+        Image::new(&bmp, point).draw(&mut inner.graphic);
+    }
+
+    fn add(&self, comp: alloc::sync::Arc<dyn Component>) {
+        todo!()
+    }
+
+    fn bound(&self) -> (Size, Point) {
+        let inner = self.inner.exclusive_access();
+        (inner.graphic.size, inner.graphic.point)
+    }
+}

os/src/gui/mod.rs

@@ -0,0 +1,21 @@
+mod button;
+mod graphic;
+mod icon;
+mod image;
+mod panel;
+mod terminal;
+use alloc::sync::Arc;
+pub use button::*;
+use core::any::Any;
+use embedded_graphics::prelude::{Point, Size};
+pub use graphic::*;
+pub use icon::*;
+pub use image::*;
+pub use panel::*;
+pub use terminal::*;
+
+pub trait Component: Send + Sync + Any {
+    fn paint(&self);
+    fn add(&self, comp: Arc<dyn Component>);
+    fn bound(&self) -> (Size, Point);
+}

os/src/gui/panel.rs

@@ -0,0 +1,66 @@
+use alloc::{collections::VecDeque, rc::Weak, sync::Arc};
+use embedded_graphics::{
+    pixelcolor::Rgb888,
+    prelude::{Point, Primitive, RgbColor, Size},
+    primitives::{PrimitiveStyle, Rectangle},
+    Drawable,
+};
+
+use crate::{drivers::GPU_DEVICE, sync::UPIntrFreeCell};
+
+use super::{Component, Graphics};
+
+pub struct Panel {
+    inner: UPIntrFreeCell<PanelInner>,
+}
+struct PanelInner {
+    graphic: Graphics,
+    comps: VecDeque<Arc<dyn Component>>,
+}
+
+impl Panel {
+    pub fn new(size: Size, point: Point) -> Self {
+        Self {
+            inner: unsafe {
+                UPIntrFreeCell::new(PanelInner {
+                    graphic: Graphics {
+                        size,
+                        point,
+                        drv: GPU_DEVICE.clone(),
+                    },
+                    comps: VecDeque::new(),
+                })
+            },
+        }
+    }
+}
+
+impl Component for Panel {
+    fn paint(&self) {
+        let mut inner = self.inner.exclusive_access();
+
+        Rectangle::new(Point::new(0, 0), inner.graphic.size)
+            .into_styled(PrimitiveStyle::with_fill(Rgb888::WHITE))
+            .draw(&mut inner.graphic)
+            .unwrap();
+
+        let len = inner.comps.len();
+        drop(inner);
+        for i in 0..len {
+            let mut inner = self.inner.exclusive_access();
+            let comp = Arc::downgrade(&inner.comps[i]);
+            drop(inner);
+            comp.upgrade().unwrap().paint();
+        }
+    }
+
+    fn add(&self, comp: alloc::sync::Arc<dyn Component>) {
+        let mut inner = self.inner.exclusive_access();
+        inner.comps.push_back(comp);
+    }
+
+    fn bound(&self) -> (Size, Point) {
+        let inner = self.inner.exclusive_access();
+        (inner.graphic.size, inner.graphic.point)
+    }
+}

os/src/gui/terminal.rs

@@ -0,0 +1,105 @@
+use alloc::{
+    collections::VecDeque,
+    string::{String, ToString},
+    sync::Arc,
+};
+use embedded_graphics::{
+    mono_font::{ascii::FONT_10X20, MonoTextStyle},
+    pixelcolor::Rgb888,
+    prelude::{Dimensions, Point, Primitive, RgbColor, Size},
+    primitives::{PrimitiveStyle, Rectangle},
+    text::{Alignment, Text},
+    Drawable,
+};
+
+use crate::{drivers::GPU_DEVICE, sync::UPIntrFreeCell};
+
+use super::{button::Button, Component, Graphics, Panel};
+
+pub struct Terminal {
+    inner: UPIntrFreeCell<TerminalInner>,
+}
+
+pub struct TerminalInner {
+    pub text: String,
+    titel: Option<String>,
+    graphic: Graphics,
+    comps: VecDeque<Arc<dyn Component>>,
+}
+
+impl Terminal {
+    pub fn new(
+        size: Size,
+        point: Point,
+        parent: Option<Arc<dyn Component>>,
+        titel: Option<String>,
+        text: String,
+    ) -> Self {
+        Self {
+            inner: unsafe {
+                UPIntrFreeCell::new(TerminalInner {
+                    text,
+                    titel,
+                    graphic: Graphics {
+                        size,
+                        point,
+                        drv: GPU_DEVICE.clone(),
+                    },
+                    comps: VecDeque::new(),
+                })
+            },
+        }
+    }
+
+    pub fn repaint(&self, text: String) {
+        let mut inner = self.inner.exclusive_access();
+        inner.text += text.as_str();
+        Text::with_alignment(
+            inner.text.clone().as_str(),
+            Point::new(20, 50),
+            MonoTextStyle::new(&FONT_10X20, Rgb888::BLACK),
+            Alignment::Left,
+        )
+        .draw(&mut inner.graphic);
+    }
+}
+
+impl Component for Terminal {
+    fn paint(&self) {
+        let mut inner = self.inner.exclusive_access();
+        let len = inner.comps.len();
+        drop(inner);
+        for i in 0..len {
+            let mut inner = self.inner.exclusive_access();
+            let comp = Arc::downgrade(&inner.comps[i]);
+            drop(inner);
+            comp.upgrade().unwrap().paint();
+        }
+        let mut inner = self.inner.exclusive_access();
+        let titel = inner.titel.get_or_insert("No Titel".to_string()).clone();
+        let text = Text::new(
+            titel.as_str(),
+            Point::new(20, 20),
+            MonoTextStyle::new(&FONT_10X20, Rgb888::BLACK),
+        );
+        text.draw(&mut inner.graphic);
+
+        Text::with_alignment(
+            inner.text.clone().as_str(),
+            Point::new(20, 50),
+            MonoTextStyle::new(&FONT_10X20, Rgb888::BLACK),
+            Alignment::Left,
+        )
+        .draw(&mut inner.graphic);
+    }
+
+    fn add(&self, comp: Arc<dyn Component>) {
+        let mut inner = self.inner.exclusive_access();
+        inner.comps.push_back(comp);
+    }
+
+    fn bound(&self) -> (Size, Point) {
+        let inner = self.inner.exclusive_access();
+        (inner.graphic.size, inner.graphic.point)
+    }
+}

os/src/main.rs

@@ -3,6 +3,8 @@
 #![feature(panic_info_message)]
 #![feature(alloc_error_handler)]
 
+use crate::drivers::{GPU_DEVICE, KEYBOARD_DEVICE, MOUSE_DEVICE};
+
 extern crate alloc;
 
 #[macro_use]
@@ -20,6 +22,7 @@ mod console;
 mod config;
 mod drivers;
 mod fs;
+mod gui;
 mod lang_items;
 mod mm;
 mod sbi;
@@ -29,6 +32,8 @@ mod task;
 mod timer;
 mod trap;
 
+// use syscall::create_desktop; //for test
+
 core::arch::global_asm!(include_str!("entry.asm"));
 
 fn clear_bss() {
@@ -54,11 +59,19 @@ lazy_static! {
 pub fn rust_main() -> ! {
     clear_bss();
     mm::init();
+    println!("KERN: init gpu");
+    GPU_DEVICE.clone();
+    println!("KERN: init keyboard");
+    KEYBOARD_DEVICE.clone();
+    println!("KERN: init mouse");
+    MOUSE_DEVICE.clone();
+    println!("KERN: init trap");
     trap::init();
     trap::enable_timer_interrupt();
     timer::set_next_trigger();
     board::device_init();
     fs::list_apps();
+    //syscall::create_desktop(); //for test
     task::add_initproc();
     *DEV_NON_BLOCKING_ACCESS.exclusive_access() = true;
     task::run_tasks();

os/src/syscall/gui.rs

@@ -0,0 +1,63 @@
+use alloc::{string::ToString, sync::Arc, vec::Vec};
+use embedded_graphics::{
+    prelude::{Point, Size},
+    primitives::arc,
+};
+
+use crate::{
+    fs::ROOT_INODE,
+    gui::{Button, Component, IconController, ImageComp, Panel, Terminal},
+    sync::UPIntrFreeCell,
+};
+
+use crate::board::{VIRTGPU_XRES, VIRTGPU_YRES};
+
+static DT: &[u8] = include_bytes!("../assert/desktop.bmp");
+
+lazy_static::lazy_static!(
+    pub static ref DESKTOP:UPIntrFreeCell<Arc<dyn Component>> = unsafe {
+        UPIntrFreeCell::new(Arc::new(Panel::new(Size::new(VIRTGPU_XRES, VIRTGPU_YRES), Point::new(0, 0))))
+    };
+    pub static ref PAD:UPIntrFreeCell<Option<Arc<Terminal>>> = unsafe {
+        UPIntrFreeCell::new(None)
+    };
+);
+
+pub fn create_desktop() -> isize {
+    let mut p: Arc<dyn Component + 'static> =
+        Arc::new(Panel::new(Size::new(VIRTGPU_XRES, VIRTGPU_YRES), Point::new(0, 0)));
+    let image = ImageComp::new(Size::new(VIRTGPU_XRES, VIRTGPU_YRES), Point::new(0, 0), DT, Some(p.clone()));
+    let icon = IconController::new(ROOT_INODE.ls(), Some(p.clone()));
+    p.add(Arc::new(image));
+    p.add(Arc::new(icon));
+    let mut desktop = DESKTOP.exclusive_access();
+    *desktop = p;
+    desktop.paint();
+    drop(desktop);
+    create_terminal();
+    1
+}
+
+pub fn create_terminal() {
+    let desktop = DESKTOP.exclusive_access();
+    let arc_t = Arc::new(Terminal::new(
+        Size::new(400, 400),
+        Point::new(200, 100),
+        Some(desktop.clone()),
+        Some("demo.txt".to_string()),
+        "".to_string(),
+    ));
+    let text = Panel::new(Size::new(400, 400), Point::new(200, 100));
+    let button = Button::new(
+        Size::new(20, 20),
+        Point::new(370, 10),
+        Some(arc_t.clone()),
+        "X".to_string(),
+    );
+    arc_t.add(Arc::new(text));
+    arc_t.add(Arc::new(button));
+    arc_t.paint();
+    desktop.add(arc_t.clone());
+    let mut pad = PAD.exclusive_access();
+    *pad = Some(arc_t);
+}

os/src/syscall/mod.rs

@@ -25,13 +25,16 @@ const SYSCALL_SEMAPHORE_DOWN: usize = 1022;
 const SYSCALL_CONDVAR_CREATE: usize = 1030;
 const SYSCALL_CONDVAR_SIGNAL: usize = 1031;
 const SYSCALL_CONDVAR_WAIT: usize = 1032;
-
+const SYSCALL_CREATE_DESKTOP: usize = 2000;
 mod fs;
+mod gui;
 mod process;
 mod sync;
 mod thread;
 
+pub use self::gui::create_desktop;
 use fs::*;
+pub use gui::PAD;
 use process::*;
 use sync::*;
 use thread::*;
@@ -65,6 +68,7 @@ pub fn syscall(syscall_id: usize, args: [usize; 3]) -> isize {
         SYSCALL_CONDVAR_CREATE => sys_condvar_create(args[0]),
         SYSCALL_CONDVAR_SIGNAL => sys_condvar_signal(args[0]),
         SYSCALL_CONDVAR_WAIT => sys_condvar_wait(args[0], args[1]),
+        SYSCALL_CREATE_DESKTOP => create_desktop(),
         _ => panic!("Unsupported syscall_id: {}", syscall_id),
     }
 }

user/src/bin/gui.rs

@@ -0,0 +1,19 @@
+#![no_std]
+#![no_main]
+
+use user_lib::create_desktop;
+
+#[macro_use]
+extern crate user_lib;
+
+
+
+#[no_mangle]
+pub fn main() -> i32 {
+    println!("gui");
+    create_desktop();
+    println!("exit pass.");
+    loop{}
+    0
+}
+

user/src/lib.rs

@@ -198,7 +198,9 @@ pub fn condvar_signal(condvar_id: usize) {
 pub fn condvar_wait(condvar_id: usize, mutex_id: usize) {
     sys_condvar_wait(condvar_id, mutex_id);
 }
-
+pub fn create_desktop() {
+    sys_create_desktop();
+}
 #[macro_export]
 macro_rules! vstore {
     ($var_ref: expr, $value: expr) => {

user/src/syscall.rs

@@ -154,3 +154,6 @@ pub fn sys_condvar_signal(condvar_id: usize) -> isize {
 pub fn sys_condvar_wait(condvar_id: usize, mutex_id: usize) -> isize {
     syscall(SYSCALL_CONDVAR_WAIT, [condvar_id, mutex_id, 0])
 }
+pub fn sys_create_desktop() -> isize {
+    syscall(2000, [0, 0, 0])
+}